Trolley-hoist.



PATENTED DEG. 1'7, 1907.

E: Y. MOORE.

TROLLEY HOIST. APPLmAuoN FAILED FEB; 1. 1907.

2 SHEETSSHEET 1.

PATENTED DEC. 17, 1907.

E. Y. MOORE.

TROLLBY HOIST.

APPLICATION FILED 113.1, 1907.

2 SHEETS-SHEET 2.

INVENTOR.

WfTNIESSES m W ms Ivcmzls FEVER! co., wasmrvcron. 04 z.

UNITED STATES PATENT crime-E.- 1

EDWARD Y. MOORE, OF CLEVELAND, OHIO.

TRoLLEY-HoIs'r.

Specification of Letters Patent.

Patented Dec. 17, 1907.

Application filed February 1. 1907. Serial No. 355,255.

the hoist to the support at any desired point.

The invention is shown herein as especially adapted for hoists havingsupporting wheels adapted to travel on the lower flange of an I-beam,the locking device operating to engage such lower flange and clamp thehoist thereto.

The invention is hereinafter more fully described and its essentialcharacteristics set .out in the claims.

In the drawings, Figure l is a side elevation of a hoist having myclamping device; Fig. 2 is a vertical section thereof; Fig. 3 is a plan,and Fig. 4 is a fragmentary section in a plane parallel with Fig. 1 andsectioned through the flange of the. I-beam.

Referring to the drawings by reference letters, A represents the I-beam,having the supporting flange a. B is the frame of the hoist, which ismade in twoparts bolted together and extends transversely at b beneaththe I-beam and upwardly at b b on opposite sides thereof. These sides I)carry supporting wheels O which ride on the flange a.

The hoist frame carries suitable hoisting I mechanism. As shown, thereare a pair of lift wheels D mounted on studs E carried by the frameportions 1). These lift wheels have formed on them gear teethadapted tomesh a respectively with pinionsf on a driving shaft F which issupported in lugs b depending from the hoist frame. The hand chain wheelG is suitably mounted on this shaft F and carries a hand chain g. Asuitable ratchet wheel H is provided to prevent backward rotation, thepawl cooperating there with being omitted for clearness of illustration.

Extending crosswise of the hoist frame above the portion 6 thereof andbeneath the flange a of the I-beam is a rod or bolt J which extendsthrou h the side members I) and has nuts on its en s. Slidably mountedon this bolt are a pair'of clamping shoes K which have their upperportions adapted to engage the side edges of the I-beam flange a. Attheir lower ends these shoes have depending pins or lugs is extendinginto lateral grooves 11 on the under part b of the hoist frame, thesegrooves being parallel with the rodJ. The shoes are thus guided so thatthey may move toward or from the flange a.

L represents a plate or disk resting on the beam, and,below the-shoes.The pins is extend through slots Z in this plate. The plate journaled inthe frame members and has a projecting operating handle 1 The slots 1pivot, the shoes are caused to move in or out. These cam slots are soplaced that movement of the lever in one direction moves both shoesinward thereby clamping the I-beam, while movement in the otherdirection moves them both outward to release the I-beam.

It will be seen that I have provided a very simple locking device whichtakes up no appreciable room, which may be easily set whenever desired,and which then remains in locking position until released. By having theshoes loosely slidable at right angles to the flange of the I-beam, Iobtain a very eflicient grip thereon, and one which does not requireaccurate adjustment to be effective.

I claim:

1. The combination with a hoist adapted to travel on a support, of apair of clam ing which members carried by said shoes extend.

2. The combination of a hoist frame, a rod carried thereby, a air ofclamping shoes slidable on said ro toward or fromeach other, and meansfor operating said shoes.

3. The combination of a hoist frame, a rod carried thereby, a pair ofclamping shoes slidable on said rod toward or from each other, and a camplate operatively connected with said shoes.

4. The combination with ahoist adapted to travel on an I-beam, of aguide carried by the hoist frame beneath the I-b'eam and transverselythereof, a pair of clamping shoes slidable on said guide toward or fromthe flange of the I-beam, and means for operating said shoes.

5. The combination With a hoist ada ted to travel on an I-beam, of a rodcarrie by shoes carried by the hoist, and an osci at' able plate havingeccentric slots through surface I) of the hoist frame beneath the I- vhas a central depending boss Z by which it is are curved eccentricallyof the pivot of the plate, wherefore, if this plate is swung on its-flan e of the I-beam, and an operating member aving eccentric slotsthrough which extensions from said shoes project.

6. The combination with a hoist frame having members adapted to extendonto opposite sides of a supporting beam and a connecting member beneathsuch beam, of a pair of clamping shoes reciprocatively guided by suchconnecting member, a horizontal late oscillatably mounted on the uppersi e of such connecting member and having cam surfaces which said shoesengage.

7. The combination of a hoist frame comprising a pair of side membersand also con necting portions whereby the frame may lie beneath asupporting beam and extend onto opposite sides thereof, grooves in suchconnecting portion of the frame, a rod extending across the frame abovesuch grooves, shoes slidably-mounted on such rod and engaging thegrooves, and means for causing the shoes to approach each other orrecede.

8. The combination of a hoist frame comprising a pair of side membersand also connecting portions whereby the frame may lie beneath an I-beamand extend onto opposite sides thereof, grooves in such connectingportion of the frame, a rod extending across the frame above suchgrooves, shoes adapted to engage the edge of the flange of the I-beamsand slidably mounted on such rod and occupying the grooves, and anoscillating plate pivotally supported by such intermediate portion of aframe between the body of the clamping shoes and such grooves, suchclamping shoes extending through eccentric slots in the plate into suchgrooves.

9. The combination of an I-beam, a hoist having supporting wheels ridingon the lower flange of the beam, the hoist frame extending beneath thebeam, such frame being grooved transversely of such flange, slidablyguided shoes occupying such grooves, an oscillatable operating platecarried by the hoist frame beneath the I-beam and having eccentric slotsthrough which portions of the shoes extend in passing into such grooves,and a handle for operating said plate.

10. The combination of an I-beam, of a hoist frame extending ontoopposite sides of the I-beam-and beneath the I-beam, supporting wheelscarried by the side of the frame and riding on the lower the I-beam,lift wheels carried such side portions ange of b 'portions on theirouter sides, a rod extending across the hoist frame beneath'the I-beamand above the intermediate portion of the frame, a horizontal platepivoted to such in termediate portion and provided with a air ofeccentric slots, the intermediate portions of the frame being groovedbelow such slots transversely of the I-beam, and a pair of clampingshoes slidably mounted-on said rod and having members extendingthroughsuch slots into said grooves. I

11. The combination, with a supporting I-beam, of a hoist having suporting wheels adapted to ride on the lower ange of the I- beam, a pairof clamping shoes carried by the hoist and adapted to engage the oposite edges of said lower flange, said shoes being guided to reciprocatetoward or from such flange, and mechanism adapted to cause suchreciprocation.

12. The combination of a hoist having supporting wheels adapted totravel along a single sup orting member, a pair of clamping shoes aapted to lock such hoist against such single member and slidably guidedto reci rocate toward or from the same, and mec anism adapted to causesuch reciprocation.

13. The combination with a hoist ada ted to travel along-a support, aguide carrie by the hoist frame beneath such support and transverselythereof, a pair of clamping shoes slidable on said guide, and means formoving said shoes toward or from said support.

In testimony whereof, I'hereunto aflix my signature in the presence oftwo witnesses. EDWARD Y. MOORE. Witnesses:

ALBERT H. BATES, WINIFRED L.- MQGARRELL.

